It would’ve been more appropriate if his opponent were wearing a Phil Jackson mask, but Knicks star Kristaps Porzingis has made good on his promise to take up boxing this offseason.

The disgruntled Porzingis posted photos Tuesday on his Instagram of a sparring session in the Liepaja arena with Mairis Briedis, a world-renowned Latvian cruiserweight, to show he’s getting out his frustrations in the ring.

see also

Before the season finale in April, Porzingis said he would experiment this offseason with boxing as a training method, calling it “a huge summer” to get stronger.

“I’ll be doing a little bit of something I haven’t done before that’s not attached to basketball maybe that will help my game,” Porzingis said. “I’ll experiment a bit over the summer.”

At a press conference upon his return to Latvia in late April, Porzingis added his plan was to spar with Briedis for a couple of weeks. “I just like boxing,” Porzingis said. “I’ll try not to hurt him.”

see also

Porzingis and the Knicks are still amid a cold war, with the young phenom upset at the chaotic running of the organization — including his mentor Carmelo Anthony being publicly placed on the trading block. Porzingis skipped his exit meeting with Jackson, then “liked” an Instagram post by Anthony that negatively responded to Jackson telling the world Anthony is better off somewhere else because the Knicks haven’t been able to win with him.

Porzingis’ older brother/agent, Janis, said he thought Knicks assistant coach Josh Longstaff would come to Latvia for the second straight summer to work with Porzingis. But Longstaff recently was let go, his contract not renewed. Of the Knicks assistants, Porzingis worked most closely with Longstaff.

Porzingis told The Post before departing in April he doesn’t want to be traded and he “loves New York.”